While abortion is often cited as the motivation behind evangelical Christians becoming politically active in the 1970s, there's another little-known reason that involves the IRS and segregated schools.

White evangelical Christians are among President Trump’s most important supporters. But more than 40 years ago, they were on the margins of American politics.

In the 1980s, the attempted assassination of Ronald Reagan and the shooting of his press secretary, Jim Brady, led to the Brady Bill. Decades later, are there lessons from that fight for the Parkland students?